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All 118 Matching Words

obeahmanA male practitioner of obeah.obesogen(pathology) A chemical or other factor that disturbs the body's normal processes, causing it to tend toward obesity.oblationThe offering of worship, thanks etc. to a deity.oblivionThe state of forgetting completely, of being oblivious, unconscious, unaware, as when sleeping, drunk, or dead.obrution(geology) A rapid burial or smothering event.obscurin(biochemistry) A protein in humans, related to titin and nebulin.obsidian(mineralogy) A type of naturally occurring black glass produced by volcanoes.obtusion(medicine) The blunting, dulling, or weakening of normal sensation.occashunPronunciation spelling of occasion.occasionA favorable opportunity; a convenient or timely chance.occationMisspelling of occasion.occisionA killing; the act of killing.occludin(biochemistry) Any of a family of plasma-membrane proteins located at tight junctionsoctairon(chemistry, in combination) Eight iron atoms or cations in a molecule (Fe₈)octaroonAlternative spelling of octoroon.octonianMisspelling of octonion.octonion(mathematics) An 8-dimensional nonassociative extension of a quaternion with a real part and 7 imaginary parts (each a real multiple of a distinct square root of −1).octopawnA board game played with four pawns on each side of a 4×4 board.octopeanOf, pertaining to, or resembling an octopus; octopuslike.octopianOf, pertaining to, or resembling an octopus; octopuslike.octoroon(dated or historical) Someone having one-eighth black ancestry.ocypodanAny crab of the family Ocypodidaeodalborn(historical) Inheriting land by odal.odonatan(zoology) Any member of the Odonata (dragonflies etc.).oilwomanA female oilman; a woman involved in oil production or delivery.okamisan(sumo) The wife of a stablemaster who oversees all activities except coachingoleacein(organic chemistry) The phenolic ester 2-(3,4-dihydroxyphenyl)ethyl (Z)-4-formyl-3-(2-oxoethyl)hex-4-enoate present in olive oilolitorinA particular steroid glycoside.omadhaun(Ireland) A fool, someone who is out of their senses, simpleton.omission(uncountable) The act of omitting.omniapan(fandom slang) A theoretical member of all amateur press associations.omnicronMisspelling of omicron.onlybornBorn as the only child in a family, flock, or the like.onocerin(organic chemistry) A white crystalline waxy substance extracted from the root of the leguminous plant spiny restharrow (Ononis spinosa).onscreenAs seen on a screen (as of television, film, or computer) rather than in real life.oolachanAlternative form of eulachon.oolichanAlternative form of eulachon.oophoron(medicine) Synonym of ovary.ophidianAny species of the suborder Serpentes; a snake or serpent.ophiuran(zoology, dated) Of or relating to the Ophiuroidea.oprationMisspelling of operation.optation(obsolete) A wish; a desire.opticianA person who makes, dispenses or sells lenses, spectacles.orbation(obsolete) The state of being orbate, or deprived of parents or children; privation, in general; bereavement.ordalian(law, obsolete) Of or relating to trial by ordeal.orexigenAny orexigenic substanceoridoninA medically useful diterpenoid found in Rabdosia rubescens.orientin(organic chemistry) A flavone that is a glucoside of luteolin.orillionAlternative form of orillon.ornithonAn aviary; a poultry house.oroxylin(organic chemistry) Any of a group of methylated flavones present in plants of the genus OroxylumorphaninSynonym of nociceptin.orthaganAny pyralid moth of the genus Orthaga.orthiconAn early TV camera tube. (Abbreviation of orthoconoscope).orthogon(geometry) A right-angled triangle.ortsteinA hardpan, typically in a podzolorvietan(historical) A medicinal preparation made from herbs, wine and honey, thought to be an antidote for any poison.oryzalinA selective herbicide used to control annual grasses etc. in food cropsoryzenin(biochemistry) A glutelin that is the main protein in riceoscillon(physics) A form of soliton observed in a granular environment.oslerianMisspelling of Oslerian.osteogen(physiology) The soft tissue, or substance, which, in developing bone, ultimately undergoes ossification.ostraconA piece of pottery or stone, usually broken off from a vase or other earthenware vessel, especially one used to cast a vote during the Ancient Greek process of ostracism.ostrakonAlternative form of ostracon.otakukin(dated, Internet, sometimes capitalized) A person who claims or believes that their soul is a reincarnation or parallel incarnation of a fictional character (especially, from anime, manga, or video games).otherkinA person who believes their soul, essence, or identity is non-human.otoconin(biochemistry) Any of a group of matrix proteins present in otoconiaotogelin(biochemistry) A glycoprotein of the acellular gel of the inner earotosteon(zoology, anatomy, medicine) Synonym of otolith.ototoxinAny ototoxic agent.oulachanAlternative form of eulachon.oulachonAlternative form of eulachon.ouranianAlternative letter-case form of Ouranian.outblown(obsolete, poetic) Inflated with wind.outbrain(transitive, informal) To exceed in mental ability; to be cleverer than.outflownpast participle of outflyoutfrown(transitive) To exceed in frowning.outgreen(transitive) To surpass in environmental activism or consciousness, to be more conscientious than someone else about not harming the environment, be more green than another.outgrownpast participle of outgrowoutlearn(transitive) To surpass (someone) in learning.outpreen(transitive) To surpass in preening.outreign(transitive) To surpass in reigning; to reign through the whole of, or longer than.outscorn(transitive) To overcome or overwhelm by haughty disregard; defy; scorn or despise.outtakenpast participle of outtakeouttrain(transitive) To train more than.ovatoxinAny of a group of toxins, related to the palytoxins, produced by the dinoflagellate Ostreopsis ovata.overburn(transitive) To burn too much or for too long.overfawn(transitive) To fawn or flatter grossly or excessively.overgainTo gain too much.overgownA gown worn over other clothing.overlainpast participle of overlieoverlean(transitive) To lean over.overplan(transitive) To plan in too much detail.overscan(television) The additional area around the four edges of a video image, outside of the safe area, that is not normally seen by the viewer.overseenpast participle of overseeoversewnpast participle of oversewoversmanAn overseer or superintendent.oversmenplural of oversmanoversoonToo soon; prematurely.overspan(transitive) To reach or extend over.overspinAn excessive amount of spin applied to a projectile such that its nose does not turn down at the summit of the trajectory.overspun(textiles) Too tightly spun.overthin(transitive) To make too thin.overturn(ambitransitive) To turn over, capsize or upset.overwarnTo warn excessively.overween(ergative) To think too highly or arrogantly of (oneself).ovomucinA trypsin inhibitor found in raw egg white, responsible for its gel properties.ovorubin(biochemistry) A chromoprotein, present in gastropod eggs, that is a proteinase inhibitor.ovotoxinA toxin found in eggs.oxathiin(organic chemistry) A six-membered, unsaturated heterocycle containing four carbon atoms, one sulfur and one oxygen atom and two double bonds, but especially 1,4-oxathiinoxeladinA particular kind of cough suppressant.oxoanion(chemistry) Any anion derived from an oxoacidoxyanion(chemistry) Any anion derived from an oxyacidoxylipin(biochemistry) oxygenated natural products which are formed from fatty acids by pathways involving at least one step of dioxygen-dependent oxidation; many of them have physiological importanceoxymoron(rhetoric) A figure of speech in which two words or phrases with opposing meanings are used together intentionally for effect.oxytalanA fibrous component of the extracellular matrix of teethoxytocin(biochemistry) A hormone that stimulates contractions during labor, and then the production of milk; also plays a role in social bonding.oyakodonA Japanese dish of chicken, egg, sliced scallion, etc. simmered in soup and served on top of rice.